Yarn guide for automatic bobbin winders



Sept. 23, 1952 J. w. MAY 2,611,547

YARN GUIDE FOR AUTOMATIC BOBBIN WINDERS Filed Oct. 2, 1950 3Sheets-Sheet 1 66 9 my JOHN k1!- Mm. L 5 J .2

, Jig L7 BY @MM ATTORNEYS Sept; 23, 1952 J. w. MAY

YARN GUIDE FOR AUTOMATIC BOBBIN WINDERS 5 Sheets-Sheet 2 Filed Oct. 2,1950 A w W g m 4 v E 7 V 4 m w W M J a Z 0 (Inlllk 4 h A r/v Y M N L w kg 0 BY aqww- ATTORNEYS Sept. 23, 1952 J. w. MAY

YARN GUIDE FOR AUTOMATIC BOBBIN WINDERS 3 Sheets-Sheet 3 Filed Oct. 2,1950 INVENTOR. Jomv 14 Mm.

ATTORNEYS Patented Sept. 23, 1952 YARN GUIDE FOR AUTOMATIC BOBBINWINDERS John W. May, Pendleton, S. 0., assignor to Deering MillikenResearch Trust, Pendleton, a nonprofit trust of Maine ApplicationOctober 2, 1950, Serial No. 188,021

7 Claims. (Cl. 242-48) This invention relates to textile machinery andmore especially to an improved auxiliary yarn guide associated with theusual yarn guide for directing yarn to bobbins in an automatic windingmachine such as the Schweiter automatic filling bobbin winder.

The usual types of automatic winding machines, such as the Schweiterwinder manufactured by Whitin Machine Works, Whitinsville, Mass, includea horizontally movable chuck to which empty bobbins are singly directedupon each preceding bobbin having been filled with yarn. During thetransfer operation, the chuck is retracted momentarily and then movesoutwardly relative to the frame of the winding machine to engage thehead of the new or empty bobbin to impart rotation thereto. The usualyarn guide, which traverses the bobbin as it is being filled and directsyarn thereto from a suitable source, is spaced substantially from thebobbin and upon the chuck engaging an empty bobbin, the yarn from thepreviously filled bobbin simultaneously extends across the face of thechuck and is clamped between the chuck and the head of the bobbin.

However, the usual type of automatic winding machine has a hook memberwhich engages the yarn above the chuck and pulls a certain amount ofyarn through the conventional yarn guide and, upon rotation of the emptybobbin, the yarn is drawn over the periphery of the head of the rotatingbobbin and then wound around the bobbin. There is considerable slack inthe yarn as it is drawn over the head of the bobbin and it, therefore,wraps around the head in a helix of relatively short pitch and, sincethe yarn is considerably relaxed at this point, the yarn frequentlyfalls into the gaps between the metal rings which encircle the head ofthe bobbin. In many instances the yarn will be wound about the head ofthe bobbin several times before being wound about the stem thereof, thusresulting in one or more turns of the yarn being disposed between therings on the head of the bobbin. This results in the yarn being so'close to the head of the bobbin between the rings that it is not likelyto be engaged by the usual cutting or severing means associated withthis type of winding machine so that the yarn is not severed.

It is, therefore, an object of this invention to overcome such defectsby providing an auxiliary yarn guide in addition to the usual yarn guideand which auxiliary yarn guide is disposed closely adjacent the head ofthe bobbin, at its juncture with the stem. This auxiliary yarn guidecauses V 2 i V yarn initially directed to the head of the bobbin to bedirected thereto in a helix of relatively large pitchso that the yarntraverses the length of the head of the bobbin during substantiallyone-half a revolution thereof. In this manner, it is not possible forthe yarn to fall into the gapsbetween the rings which encircle the headofthe bobbin or, at least, the yarn is always drawn across at least twoof the rings and therefore is high enough between said rings so as to beengageable by the conventional severing means.

Some of the objects of the invention having been stated, other objectswillv appearja's' the description proceeds whentaken in connection withthe accompanying drawings in which- Figure 1 is a fragmentary top planview of the automatic winding machine with some of the parts being shownin section and with other parts broken away and showing,specificallyfthe improved yarn guiding means disposed adjacent the pointat which the'ya'rn is initially fed to an empty bobbin;

Figure 2 is a fragmentary vertical sectional View looking substantiallyalong the line 2-2 in Figure l and showing the improved yarn guide inoperative position;

Figure 3 is'a view similar to Figure 2 but showing the improved yarnguide in an inoperative position; v

Figure 4 is a vertical sectional view looking substantially along theline 4-4 in Figure 1 and also showing the improved yarn guide inoperative position;

Figure 5 is a, fragmentary elevation showing a portion of the chuck anda portion of an empty bobbin in association therewith and to which a fewturns of yarnhave been directed;

Figure 6 is a view similar to Figure 5 but showing the manner in whichthe yarn is directed to the head of the bobbin by the improved yarnguide;

Figure 7 (Sheet 1). is a top plan view of the yarn guide removed fromthe machine and from the supporting means therefor;

Figure 8 is a view of. the yarn guide'looking up at the lower side ofFigure 7;

Figure 9 is a top plan view of 'an alternative construction of yarnguide embodying the invention. V

Referring more specifically to the drawings, the numeral 10broadlydesignates the fram or gear housing of the automatic bobbinwinding machine. The particular automatic bobbin winding machine showninthe drawings is of a type manufactured byWhitin Machine Works, Whit- 3insville, Mass, and which is known as the model M-S Whitin-Schweiterautomatic filling bobbin winder and a complete description of which isgiven in a booklet entitled Whitin Catalogue of Component Parts,copyright 1945.

The frame or gear housing it contains conventional driving means fordriving the various moving Parts of the winder. These drivin means arenot pertinent-to the present invention and therefore an illustration anddescription thereof will not be given. The housing I6 is of castmaterial and includes a front panel II and a cover I2 which suitablysupports a bobbin chute I3, only a portion of which is shown. The frontpanel I! of the gear housing IIl has a boss or projection id thereon inwhich a chuck or bobbin head holder has longitudinal sliding movement.The bobbin head holder I 5 is adapted to move inwardly or from right toleft in Figures 2 and 3 upon an empty bobbin such as the bobbin orquill, broadly designated "at I6, being directed thereto from the chuteI3 in a conventional manner following the discharge "of a filled bobbinfrom the chuck or bobbin head holder I5.

The bobbins which are adapted to be filled with yarn on this particulartype of machine, one of which is shown and indicated at It in thedrawings, are of a type having a stem I! and a head 20, the head 26being of substantially greater diameter than the stem l I and the stemand head usually being made o-fa woodm'aterial. The head of the bobbinor quill It has a plurality of closelyspac'ed rings 2| encircling thesame across which a strand of yarn Y is adapted to be extended upon thisyarn being initially directed to the bobbin I6 from an eye 22 of aconventional oscillating thread guide 23.

It will be noted that the eye 22 of the oscillating thread guide 23 isspaced substantially from the periphery of the bobbin I 6 positioned inthe bobbin head holder I5 and the present invention is concerned withimproved means for directing the yarn to the bobbin upon the first fewturns being applied thereto so as to insure that thestrand of yarn Ywill extend across the rings 2I of the bobbin without falling into thespaces therebetween to permit the yarn to be properly engaged by theusual tail cutter or severing means associated with machines of thistype. This improved yarn guiding means will be later described indetail.

The oscillating thread guide 23 extends downwardly and outwardly and issuitably secured, as

by a screw 25, to an oscillating crank 25 which is driven by oscillatinglevers 28 and 29 and conventiona1 means, disposed within a carriage 2?on which the crank arm 26 is pivotally mounted. This carriage 2'! ismounted for longitudinal movement on a carriage shaft 30 which extendsin parallel spaced relation to the bobbin I6 positioned in the bobbinhead holder I5 and which is disposed in a slightly lower horizontalplane than the bobbin holder I5. This carriage 2'l'also supports aconventional feeler wheel 3I which is adapted to rotate in contact withthe periphery of the stem ll of the bobbin I6 as the yarn Y is directedthereto, the feeler Wheel 3| is rotatably mounted in the free end of afeeler wheel arm 32 which also extends downwardly away from the observerin Figure 1 and is pivotally mounted at its lower end, as at 33, on thecarriage 27.

Upon a filled bobbin being elected from the bobbin head holder I5 byconventional means, not

shown, and a new bobbin or empty bobbin being 4 the yarn Y extends fromthe small end of the filled bobbin and is engaged by a lower yarnengaging hook 48 which is often termed a scissors thread guide and whichis pivotally mounted on a stud il projecting from a boss or angularlydisposed projection 32 extending from the front face of the wall II ofthe housing Iii. Conventional means, not shown, are usually providedwith a machine of this type for swinging the lower yarn engaging hookdownwardly substantially below the bobbin head holder I5 so as to engagethe yarn at a point between the bobbin head holder i5 and the small endof the previously ejected bobbin substantially as shown in Figures 2 and3. At this time, a conventional thread catcher finger E3 having a hookportion 44 (Figure 1) is swung about its pivot 55 to also engage theyarn Y at a point between the eye 22 of the oscillating guide 23 and thebobbin head holder IE to thus insurethat the yarn will extend across thefront or outer face of the bobbin head-holder I 5 'upon an empty bobbinbeing directed thereto so that the yarn will be clampingly securedbetween the head of the bobbin IE5 and the front face of the bobbin headholder I5.

Now, the thread catcher finger 13 is pivoted at $5 in a conventionalthread catcher coupling 45 which is fixed on one end of a thread catchersliding rod 47 snounted for horizontal sliding movement in the housingHi and which is operated by conventional means, not shown, to move thethread catcher finger outwardly immediately preceding the ejection ofabobbin from the bobbin head holder I5 and to then move t-he threadcatcher finger "rearwardly or towards the housing Iii from substantiallythe position shown in Figure 3 to the position shown in Figure 2. t

The thread catcher coupling it has inherent spring means, not shown,normally urging the thread catcher finger 3S inwardly toward the bobbinto where the free end'of the hook '44 will be disposed in substantiallythe vertical planeof the axis of the bobbin head holder 15. The threadcatcher coupling :26 is provided with a projection 48 for a purpose tobe described, and the finger 13 has a conventional preiectionwhich abutsa screw 39 suitably secured on the top surface of the spindle'housing I4upon movement of the sliding rod '57 toward "the housing I-Zl thuscausing the thread catcher finger to swing away from the center of thebobbin head holder It to substantially the position shown in Figure 1with the result that the yarn which has been engaged by the hook portion34 thereof will be released substantially as shown in Figure '2. At thispoint, rotation is imparted to the chuck P3 and the corresponding bobbin15 with the result that the yarn Y is taken up-by the bobbin 1 6 andwound thereon as it is directed thereto from the usual oscillatingthread guide 23L Now, the winding machine is provided with a suitabletail cutter which is adaptedto function through conventional means, *notshown, so as-t'o engage the yarn extending across therings 2I of thebobbin f5 immediately prior to the bobbins being ejectedfrom the chuckt5. Theparticular cutter shown in the drawings is that shown anddescribed inmy co-pending application, Serial No. 179,672, filed August16, 1950; This thread cutter is shown by way of illustration only andnot as a part of the present'invention.

The tail cutter is broadly designated at '55 and includes a bladesupporting armor member 5 6 oscillatably mounted intermediateitsendsthereof as at 5'! (Figure 4) on 'asuitable support bracket 68 suitablysecured to the front wall H of the gear housing lil, as by screws 6|This blade supporting member has a blade or cutter 62 suitably securedto the free end thereof and which is suitably grooved so as to formprojections 63 which, upon a bobbin being substantially filled withyarn, will be moved by means, not shown, to occupy a position betweenthe rings 21 on the head 20 of the bobbin 16. Since the bobbin I6 isrotating at the same time that the projections 63 on the cutter blade 62enter between the spaced rings H on the bobbin IS, the yarn extendingacross the rings will engage the projections to thus be severed orbroken away.

It will be'noted, as has already been stated that there is considerableslack in the yarn Y as it is initially directed to the bobbin I6 fromthe eye 22 of the oscillating thread guide or yarn guide 23.

Referring to Figures 2 and 3, it is evident that the angle at which theyarn is first introduced to the head 20 of the bobbin I6 is such thatthe yarn may be wound about the head 20 of the bobbin 15 several timesbefore being directed to the stem ll thereof with the result that theyarn may be wound between the rings 2| substantially as shown in Figure5. Also, in the event the yarn is not wound about the head 20 of thebobbin It several times, the yarn may be so slack as to extend in arelatively short helix loosely disposed across the rings 2| with theresult that it will sag between the rings and thus would probably not beengaged by the projections 53 on the thread cutter or tail cutter.

To overcome this difficulty, there is provided an improved means forautomatically directing the yarn to a point at the juncture of the head20 and the stem 11 of the bobbin 16 which will notonly takeup some ofthe slack in the yarn Y but will also insure that the yarn will bedirected more accurately over the head 20 of the bobbin rather thanaround the head 28 thereof and which will also cause the yarn to extendat an angle relative to the axes of the rings 2| on the head of thebobbin 20 or in a helix of relatively large pitch so that it willtraverse the length of the head of the bobbin E6 in approximatelyonehalf a revolution thereof. In this way, it is not possible for theyarn to fall into all of the gaps between the three rings and, it hasbeen found in, practice that the yarn is always drawn across at leasttwo of the rings to thus be positively engaged by the thread or tailcutter 55.

The improved yarn guide is broadly designated at 65 and is preferablyformed of wire material which is circular in cross-section. Thisimproved yarn guide 65, which may also be termed an auxiliary yarnguide, includes a stem 66 which is disposed above and in substantiallythe vertical plane of the axis of the chuck I5. The rear or inner end ofthe stem 66 of the auxiliary thread guide 65 is clampingly secured in aforwardly and rearwardly extending legs 61 of a bell crank or lever l'ilby means of a clamp plate H which clamps the stem 66 against the uppersurface of the arm 6'! by means of screws '32. The bell crank or leveralso includes a vertical arm 81a and is oscillatably mounted on a pivotpin 13 which extends laterally and is suitably secured, as by solderingor welding, to a vertically disposed auxiliary yarn guide support plateor bracket 74.

The bracket is substantially L-shaped in crosssection and the verticalleg thereof has an outwardly extending portion integral therewith 6which is suitably secured to the frame it! of the winder such as'by oneof the screws 6| heretofore described which secure the bracket 60 to theframe ll] of the winder. The horizontal leg of the substantiallyL-shaped bracket 14 has a transverse slot 16 therein which is penetratedby a screw H for securing the bracket 14 to the upper surface of theboss or projection 14. The horizontal leg of the L-shaped bracket 14 hasan upturned lip integral therewith which is threadably penetrated by anadjustment screw M which is locked in position by a lock nut 82.

This adjustment screw 8| is positioned for engagement by the verticalleg of the arm 61a of the bell crank H! which is normally urgedthereagainst by a tension spring 83 secured at one end'thereof to theupturnedportion 80 of the horizontal leg of the L-shaped bracket 74,-and. having its rear end secured to a laterally extending abutment orend portion 8A or cam integral with the arm B'la of the bell crank 10(Figures 1 and 4).

The bell crank it is shown as being formed of a single piece of materialbent to form the arms 61 and 57a and to the proximate edges of which aplate or bearing member 85 is suitably secured, as by welding, and whichserves to retain the bell-crank ill on the shaft 13 provided therefor.This bell crank IE! is shown in the preferred form in the drawings,however, it is understood that it may be made in any suitable manner asfrom a single piece of material such as cast iron and the like if sodesired.

The cam boss projection d8 on the thread catcher coupling 46 is adaptedto engage this abutment portion 84 of the arm 61a of the bell crank if!as this coupling 46 along with the thread catcher finger 43 and thethread catcher sliding rod 41 are moved inwardly relative to the housing29 by conventional means, not shown, immediately preceding thecompletion of a transfer operation, i. e., the ejecting of a filledbobbin and replacement and filling of an empty bobbin. This causes thebell crank 70 to swing from substantially the position shown in Figure 3to substantially the positionshown in Figure 2, to thus swing the freeend of the auxiliary yarn guide 65 to a position closely adjacent thejuncture ofthe head 2i! of the bobbin IS with the stem l1 thereon.

The stem 65 of the auxiliary yarn guide 65 extends forwardly oroutwardly from the arm 67 of the bell crank in and since the stem 66 isdisposed in the same vertical plane as the axis of the chuckv [5 thestem is bent rearwardly, as at 65, at an angle and is again bentforwardly and extends in parallel relation to the end portion of thestem 65 as at 8B. The parallel portion 86 i reversely bent forwardlyupon itself as at 8'1 to form a hook portion or notch 9i] into which theyarn is directed as it is pulled rearwardly or towards the plate H ofthe housing If; by the thread catcher finger 43 in the manner heretoforedescribed.

In order to insure that the thread or yarn Y will be directed to thenotch 90, a guide extension rod 9| is suitably secured, as by welding,to the thread guide 65 at the juncture of the hook por tion 59 and thebent portion 81. Also, to prevent the feeler wheel 3| from engaging thehook portion iii! of the auxiliary yarn thread guide 65, thehook-portion is flattened or cut away as at 92 on the edge, thereofadjacent the feeler wheel 3|.

It will be noted in Figures 2 and 8 that the free end of the auxiliaryyarn thread guide 65 is also bent at an angle relative to the horizontalaxis of the stem portion 16% thereof so the extension 9'! thereon may be:disposed in a horizontal plane in substantially parallel relation tothe axis of a bobbin is positioned in the chuck I when the auxiliaryyarn thread guide 65 is lowered into operative position.

It is thus seen that during the period in which filling or yarn Y isbeing directed to the stem ll of the bobbin iii, the hook or notch 9i ofthe auxiliary yarn guide 65 will be disposed in an elevated position,which position it will retain during the replacement of the filledbobbin in the chuck 15 with an empty bobbin and immediately followingthe positioning of an empty bobbin in the chuck it, the thread catchercoupling 45 along with the thread catcher finger d3 moves rearwardly, orinwardly relative to the "housing is, and, in so doing, directs theyarnY from the eye 22 of the oscillating yarn guide 23 :along the extension53! of the auxiliary yarn guide 65 to thus enter the notch so. Then,with its continued rearward movement, the projection 48 on the threadcatcher coupling 36 engages the cam 84 on the arm Bio of the bell crankll! to thus swing the bellcrank It! in a clockwise direction from theposition shown in Figure 3 to the position shown in Figure 2.

At substantially the same time that the hook at of the auxiliary yarnguide -85 assunres the position shown in Figure 2 immediately adjacent athe juncture of the head and stem of the bobbin it, the thread catcherfinger l3 swings transversely by abutting screw 59 to assumesubstantially the position shown in Figure l to-thus release the yarnY'from thehook portion 34 thereof substantially as shown'in Figure 2.Simultaneously, upon the release of the yarn Y from the hook portion 64of the finger d3, rotation is imparted to the spindle l5 and the bobbinit with the result that the tail of yarn between the hook 99 of theauxiliary yarn guide 55 andthe chuck i5 is wound around the head :26 ofthe bobbinlt. However, since .thehook portion 99 of the auxiliary yarnguide 65 is-posi-tioned adjacent the outer end of the head or at thejuncture of the head 20 with the-stem H of the bobbin It, a part of theslack in the yarn Y will be taken upby thishook portion 99-01? the yarnguide 855 and also, the yarn will be directed to the junction point ofthe head 26 and :stem 1? rather than to the end of the heador the pointwhere the head 21] engages the chuck I5. This will cause the yarn toextend across the rings Ed on the head 20 at a relatively large pitchedhelical angle substantially as shown in Figure 6 rather than at arelatively short pitched helical angle as has heretofore been frequentlydone.

When the improved auxiliary yarn guide 65 is employed, the yarn isalwaysvdrawn across at least two of the rings 2! and the yarn thereforeis high enough above the head it .of the bobbin 16 so as to be engagedby the projection 63 on the tail cutter 55 as they are moved intooperative position in a conventional manner.

The alternative and preferred construction of auxiliary yarn guide '85shown in Figure 9, the parts or which are identified with the. samereference numbers as corresponding parts of the guide of Figures 1 to 8but with a prime *afiixed thereto, differs from the guide 65 primarilyin that the'notch or hook portion St is formed at the juncture of theextension 9i with the tip portion 92', thus avoiding the reverse curveformed at the bend 81 of the guide of Figures 1 to 8 and reducing partsupon whichslack yarn might catch.

In the drawings and specification there has been set forth a preferredembodiment of the invention and although specific terms are employed,they are used in a generic and descriptive sense only and not forpurposes of limitation, the scope of the invention being defined in theclaims.

I claim:

1. In an automatic winding machine having a chuck to which bobbins aresuccessively directed for winding yarn thereon and also having a yarnguide spaced substantially from the bobbin for directing the yarnthereto, an auxiliary yarn guide normally disposed adjacent the firstyarn guide and means automatically operable upon a filled bobbin beingejected from the chuck and a succeeding empty. bobbin being received bythe chuck for moving the auxiliary yarn guide .to

occupy a position immediately adjacent the head of the bobbin to thusdirect the yarn thereto to insure that the yarn will be drawn across thehead of the bobbin in a helix of relatively large pitch.

2. In an automatic winding machine having a rotatable chuck for windingyarns on bobbins .and having transfer means for changing the bobbins. insaid chuck and also having a yarn guide for directing yarn to a bobbinin the chuck, an auxiliary yarn guide automatically operable during thetransferoperation to position the yarn closely adjacent the head of thebobbin placed in the chuck.

3. In an automatic winding machine for winding yarn onto bobbins eachhaving a head and a stem integral with the head but of less diameterthan the head and also having a plurality of closely spaced ringsencircling said head, said machine having a rotatable chuck forsupporting and imparting rotation to a bobbin inserted therein and saidmachine being provided with means for ejecting filled bobbins andreplacing said filled bobbins with empty bobbins and said machine alsohaving an oscillating yarn guide disposed in substantially spacedrelation to the periphery of a bobbin positioned in said chuck, animproved auxiliary yarn guide adapted to cooperate with said oscillatingyarn guide for directing the yarn to a point closely adjacent thejuncture of the head and stem of a bobbin positioned in the chuck tocause the yarn, upon rotation of the bobbin, to extend across the ringsor the bobbin and to prevent the yarn from being wound about the head ofthe bobbin and between said rings.

a. In a winding machine for winding yarn onto bobbins provided with achuck for receiving the base of a bobbin which has a plurality of spacedrings on its base and said machine having means foriinparting rotationto the bobbinand means spaced substantially from a bobbin disposed inthe chuck for traversing the yarn along the bobbin to be depositedthereon, said winding machine also having means automatically operableupon completion of the winding operation for ejecting the filled bobbinand means for extending the yarn across the face of the chuck as itextends from the ejected bobbin to be clampingly engaged by the head ofa succeeding bobbin positioned in the chuck and said winding machinealso having a frame-and a tail cutter thereon for cutting a tail of yarnextending across the rings of the bobbin, means for insuring correctpositioning of the yarn to be out by the tail cutter comprising animproved auxiliary yarn guide cooperating with the means for traversingthe yarn along the bobbin and normally occupying a position at a pointbetween said yarn traversing means and the bobbin and closely adjacentsaid traversing means, means automatically operable upon an empty bobbinbeing received by the chuck for moving the auxiliary yarn guide toaposition closely adjacent the juncture of the head of the stem thereofto position the yarn across said rings, and to prevent the yarn frombecoming entangled in said rings.

5. In a structure according to claim 4, said auxiliary yarn guidecomprising a bell crank oscillatably supported on the frame of themachine and having a first and a second arm thereon, a stem mounted onan arm of said bell crank and extending in substantially parallelrelation to the axis of a bobbin positioned in said chuck and having ahook portion on the free end thereof, spring means normally urging thebell crank in one direction to position the hook of said stem away fromsaid bobbin, said means for extending the yarn across the face of thechuck having means thereon for imparting movement to said bell crank inthe opposite direction formoving the hook of said stem to a positionadjacent the juncture of the head and stem of the empty bobbin to causethe tail of the yarn extending from the juncture of the head and thechuck to extend across the rings of the bobbin in spaced relation to thehead of the bobbin to be engaged by the tail cutter.

6. In an automatic winding machine for winding yarn onto bobbins whichhave a head and a stem integral with the head and a plurality of closelyspaced rings positioned about said head, said machine having a frame anda rotatable chuck for supporting and imparting rotation to a bobbininserted therein and said machine also having means for ejecting filledbobbins from said chuck and replacing said ejected bobbins with theempty bobbins and also being provided with movable thread catcher meansmovable into operative position for extending yarn across the face ofthe chuck to be engaged by the headof the succeeding bobbin beingpositioned in the chuck, and said machine also having an oscillatingyarn guide disposed in substantiallyspaced relation to the periphery ofa bobbin positioned in said chuck, an improved auxiliary yarn guideadapted to cooperate with said oscillating yarn guide for directing theyarn to a .point closely adjacent the juncture of the head and stem of abobbin positioned in the chuck tocause the yarn, upon rotation of thebobbin, to extend across the rings of the bobbin and to prevent the yarnfrom being wound about the head of the bobbin and between said rings,said frame having a bell crank oscillatably mounted therein, saidimproved 10 auxiliary yarn guide being mounted on said bell crank andhaving a stem extending, in spaced substantially parallel relation tothe bobbin in the chuck, said stem having a hook portion adapted toreceive the yarn and an angular extension for guiding the yarn to thehook portion, and said improved auxiliary yarn guide being operable bythe movable thread catcher means.

7. In an automatic winding machine for wind-' ing yarn onto bobbinswhich have ahead and a stem integral with the head and a plurality ofclosely spaced rings positioned about said head, said machine having aframe anda rotatable chuck for supporting and imparting rotation to abobbin inserted therein and said machine also having means for ejectingfilled bobbins from saidchuck and replacing said ejected bobbins withempty bobbins and also being provided with movable thread catcher meansmovable into operative position during the transfer operation forextending yarn across the face of the chuck to be engaged by the head ofthe succeeding bobbin being positioned in the chuck, and said machinealso having an oscillating yarn guide disposed in substantially spacedrelation to the periphery of a bobbin positioned in said chuck, animproved auxiliary yarn guide adapted to cooperate with said oscillatingyarn guide for directing the yarn to a point closely adjacent thejuncture of the head and stem of a bobbin positioned in the chuck tocause the yarn, upon rotation of the bobbin, to extend across the ringsof the bobbin and to prevent the yarn from being wound about the head ofthe bobbin and between said rings and said improved auxiliary yarn guidebeing operable by the movable thread catcher means, said frame having abell crank oscillatably mounted therein, said improved auxiliary yarnguide being mounted on said bell crank and having a stem extending inspaced substantially parallel relation to the bobbin in the chuck, saidstem having ahook portion adapted to receive the yarn and an angularextension for guiding the yarn to the hook portion, and said movablethread catcher means having a projection thereon for engaging.

said bell crank to operate the auxiliary thread guide during a transferoperation.

JOHN W. lVIAY.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

